Hoist



F. E. DRAKE.

HOIST.

APPLICATION FILED NOV-21, 19?]. 1,2.6,26. PatentedAug.-15, 19222,

3 SHEETS-SHEET l- FTQMLSE 171 01262 Quorum F. E. DRAKE.

HOIST.

APPLICATION FILED Nov.2I, I921.

Patented Aug. 15, 19.22.

3 SHEETS-SHEET 3.

UNITED STATES PATENT ornca.

FRANCIS E. DRAKE, or DAVENPORT, IOWA. ll;

noism. 1

To all whom it may concern.

Be it known that I, FRANCIS E. DRAKE, a citizen of the United States,residing at Davenport, in the county of Scott and State of Iowa haveinvented certain new and useful Improvements in a Hoist, of which thefollowing is a specification. I v

The invention has reference to machines or apparatuses for lifting orhoisting heavy objects and has for its principal object to provide adevice of this character which contains certain improved featuresserving to strengthen the device and greatly increase its utilityattention being called to the structure disclosed in the Patent Number1,413,526 issued. tome on April 18, 1922.

With the above and numerousother objects in view as will appear as thedescription' progresses the invention resides inecertain novel featuresof construction, and the combination and arrangement of parts as will behereinafter more fully described and claimed.

In the drawing p Figure 1 is a side elevation of a hoist constructed inaccordance with the invention.

Figure 2 is a top plan thereof, FigureB is a front elevation thereof, IA Figure 1' is a detailed view of the guide roller and bracket used inconnection with the device,

Figure 5 is a similar view taken at right I angles to that shown in'Figure 4, and

Figure 6 is a plan vie of a plate used .in conjunction with the device.

Referring to the drawing in detail it will be seen that 1 designates abase which is of substantial U-shaped construction.v The brackets 2 areprovided at the terminals of the base 1 and have journalled therein thewheels 3 which are disposed so as to be in alignment with the legs ofthe base. A pair of bridge plates 4 are fiXed-to the base and each ispreferably situated adjacent the corners thereof as shown to advantagein Figure 2. The castor rollers 5 are suitably attached to the bridgeplates 1 intermediate their ends whereby the base lmay be moved fromplace to place as will be readily understood. 7

In the preferred construction of the frame work of this device, Iprovide three standards projecting upwardly from the base two of whichare located intermediate the ends of the legs thereof and the other atthe cenard 6. All the parts of the frame Application filed November 21,1921-. 7 Serial No. 516,722. I

Specification of Letters Patent. Patented Aug. 15, 1922;;

ter point of the base. The side standards 1 v 6 have the brace elements7 fixed th legs at their bottom ends and also to the of the base 1.Similar brace elements 8 are attached in like manner to'the end standard 9. A cross beam 10 extends'across the top of the standards 6 and thebrace elements 11 are connected to the'cross beam 10 and the legs 6 asis seen to advantage Figure 3. The parts thus farrlescribed form theframe work of the invention upon which the hoisting mechanism ismounted.

' A supporting beam 12 is disposed between.

the standards and has fixed to itstermlnals thejournal brackets 13Iwhichsup port the guide rollers 14 that are adapted to move in the grooveformed"in 'thestandpreferably constructed of items Any suitable meansmay be provided for: lifting ork are the supporting beam 12. I prefer,how-.

ever, to provide the conventional and well] if:

known chain hoist as indicated at15. The lifting chain v16 is actuatedby thechain'hoist 15 and is connected at one end tothe intermediateportion of the supportingbjeam l 2 I so that the same may be raised andlowered when desired. 9 .r Lift means are supported onthe'support arms19 which are fulcrurned'at their rear ing beam 12 and consists of apairof lift] ends between a link plate 20 and a plate j 21. These rear endso'f th'e lifting arms 19 are preferably slightly spaced from each other.The plate 21 comprises anelongate'd body having a slot 22 therein and atits rear end is provided with the 'aperture'd' diverg ing cars 23 towhichxthe rear ends of the lifting arms 19 are fulcrumed. At its otherend the plate 21' is provided with the 'diverging arms 24 which areprovided with the right angularly extending ears 25that may be suitablyattached to the supporting r1 00 beam 12. A pair of links 27 arefulcrumed together at one of their ends and preferably by a pin which isadapted to extend ithrough I a the slot 22. The other ends of the links27 are fulcrumed to the-lifting arms 19 intermediate their ends sothat'these armswill at all times be equi-distant from the r respectiveadjacent legs of the base. 1 when. they are moved in a horizontal plane.Thus,"re'-' v ferring to Figure 2, if one arm 19 is move inwardly theother arm 19 will be In oved inwardly an equal distance.

The brackets 30 are fixed to the ends of the lifting arms 19 and areprovided with the arcuate edges 31 so that an axle of an automobile orthe like may readily rest therein. An equalizing device is associated.with the inner or pivoted terminals of the arms. It comprises anequalizing cable 3'2 having its terminals suitably attached to theeye-bolts 33 carried respectively by the link plate 20 and thesupporting bar 12. This cable is passed over sheave wheels 84;, 35,and36. As shown in the drawing there is preferably provided two of theseequalizing chains 32 that are connectedto the supporting beam 12 atequal distances from its center. This equalizing arrangement. tends tokeep the lifting arms in a horizonta po' sition at any and all timesholding them balanced upon the supporting beam 1.32. at all stages inits vertical adjustment.

A leg 40 is provided with a curved extension 41 which is fulcruined toeach of the lifting arms 19 adjacent their free ends and. may be held inan inactive position by the latch hooks 42 which are fulcrumed on thebottom of the lifting arms as at 43 the other end of their bases adaptedto engage the stop bolts 4.4. These legs are preferably used when aloadis to be left in a lifted.

position for some time such as the IEliFlli'lQl of'the forward end of anautomobile at which time the liftingbars will be raised. the height ofthe logs a0 at which time they may be placed in a. vertical position soto engage the floor and support the arms thus releasing most of thestrain from the frame of the device.

The foregoing description and accompanying drawings have reference towhat might be considered the approved or pre ferred form of myinvention, 1 desire it to be understood that I may make such changes inthe construction, combination and ar rangement of parts, materials,dimensions, et cetera, as may prove expedient and fall within the scopeof the invention as hereinafter claimed.

Having thus described my invention what I claim as new is 1 A hoistcomprising-a frame having a movablev guide, lift arms fulcrumed on.Sftlfil guide and horizontally adjustable, a plate extending from saidmovable guide and having the ends of said lift arms pivoted thereto, apair of links pivoted at one end to each other, a pin passing throughthe pivoted-ends of the links, said plate pro.

,..Vided-with aslot for receiving said pin, the

other ends of the links being pivoted to the respectlvelift armsintermediate their ends. 2. A holst comprising .a frame having a 1,aaaeea movable guide, lift arms fulcrumed on said guide andhorizontally ad ustable, a plate extending from said movable guide andhaving the ends of said lift arms pivoted respective lift armsintermediate their ends,

and means for moving the guide to adjust the lift means vertically.

3. In combination, a frame, a supporting beam movable vertically in theframe, means for moving the supporting beam, 0. pair of lift armsresting intermediate their ends on said supporting beam, a plateextending from said supporting beam and pro vided with a longitudinalslot therein, one of the ends of each lifting armfulcrumed on the plate,a pair of links, a pin passing through the ends of said links andthrough said slot and theother ends of thelinks being connected to thesupporting beam.

4. A hoist comprising; a frame having a movable guide, liftIIlGflDSiil-llCllllllQCl on said guide and horizontally adjustable,means for moving the guide to adjust the lift means vertically, and legspivoted to the lift means in the manner and for the purpose specified.

5. A hoist comprising lift-arms pivotally fixed at corresponding endswith their respective outer or weight supporting ends movable inhorizontal plane, a vertically ad ustable member below the lift arms andproviding a fulcrum support therefor, and legs pivotally carried by thelift arms in the manner and for the Purpose specified.

6. A hoist comprisinglift arms, a vertically adjustable member below thelift arms, so as to support thesam e, a plate fixed to the verticallyadjustable member and pro- .vided with a slot therein, correspondingends of the lift arms being pivotally at tached to the plate, linkspivoted to the arms intermediate their ends and pivoted to each other, apin passing through the pivoted .ends' of the links and through the slotin said plate for keeping the arms equidistant from a central point onthe vertically adjustable member, and means for holding the

